Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy

Detalhes bibliográficos
Autor(a) principal: Mantovani,Ana Carolina G.
Data de Publicação: 2020
Outros Autores: Chendynski,Letícia Thaís, Galvan,Diego, Borsato,Dionísio, Mauro,Eduardo Di
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000801661
Resumo: Biodiesel is a suitable alternative to replace the petro-diesel. The biodiesel is formed by unsaturated esters easily degraded by interferences of oxygen, temperature, contact with metals or contaminants. The aim of this research was to investigate the biodiesel degradation process via 1H nuclear magnetic resonance (NMR) spectroscopy, observing the olefinic, bis-allylic and allylic protons signals of the chemical bonds, and by the induction period of the Rancimat. Biodiesel samples with metallic ions (Fe and Cu) and with rosemary natural extract were analyzed. The metal compounds showed a catalytic effect in the samples and the rosemary natural extract showed to be efficient by retarding the degradation process. The extract was ineffective in the presence of iron. Through the 1H NMR spectra was possible to observe changes in the signal intensities of the olefinic, bis-allylic and allylic protons as well as the formation of oxidation products in the biodiesel in the degradation process.
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spelling Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR SpectroscopyNMRbiodieseldegradationoxidationspectroscopyBiodiesel is a suitable alternative to replace the petro-diesel. The biodiesel is formed by unsaturated esters easily degraded by interferences of oxygen, temperature, contact with metals or contaminants. The aim of this research was to investigate the biodiesel degradation process via 1H nuclear magnetic resonance (NMR) spectroscopy, observing the olefinic, bis-allylic and allylic protons signals of the chemical bonds, and by the induction period of the Rancimat. Biodiesel samples with metallic ions (Fe and Cu) and with rosemary natural extract were analyzed. The metal compounds showed a catalytic effect in the samples and the rosemary natural extract showed to be efficient by retarding the degradation process. The extract was ineffective in the presence of iron. Through the 1H NMR spectra was possible to observe changes in the signal intensities of the olefinic, bis-allylic and allylic protons as well as the formation of oxidation products in the biodiesel in the degradation process.Sociedade Brasileira de Química2020-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000801661Journal of the Brazilian Chemical Society v.31 n.8 2020reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20200052info:eu-repo/semantics/openAccessMantovani,Ana Carolina G.Chendynski,Letícia ThaísGalvan,DiegoBorsato,DionísioMauro,Eduardo Dieng2020-07-23T00:00:00Zoai:scielo:S0103-50532020000801661Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2020-07-23T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
title Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
spellingShingle Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
Mantovani,Ana Carolina G.
NMR
biodiesel
degradation
oxidation
spectroscopy
title_short Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
title_full Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
title_fullStr Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
title_full_unstemmed Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
title_sort Evaluation of the Oxidation Degradation Process of Biodiesel via 1H NMR Spectroscopy
author Mantovani,Ana Carolina G.
author_facet Mantovani,Ana Carolina G.
Chendynski,Letícia Thaís
Galvan,Diego
Borsato,Dionísio
Mauro,Eduardo Di
author_role author
author2 Chendynski,Letícia Thaís
Galvan,Diego
Borsato,Dionísio
Mauro,Eduardo Di
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Mantovani,Ana Carolina G.
Chendynski,Letícia Thaís
Galvan,Diego
Borsato,Dionísio
Mauro,Eduardo Di
dc.subject.por.fl_str_mv NMR
biodiesel
degradation
oxidation
spectroscopy
topic NMR
biodiesel
degradation
oxidation
spectroscopy
description Biodiesel is a suitable alternative to replace the petro-diesel. The biodiesel is formed by unsaturated esters easily degraded by interferences of oxygen, temperature, contact with metals or contaminants. The aim of this research was to investigate the biodiesel degradation process via 1H nuclear magnetic resonance (NMR) spectroscopy, observing the olefinic, bis-allylic and allylic protons signals of the chemical bonds, and by the induction period of the Rancimat. Biodiesel samples with metallic ions (Fe and Cu) and with rosemary natural extract were analyzed. The metal compounds showed a catalytic effect in the samples and the rosemary natural extract showed to be efficient by retarding the degradation process. The extract was ineffective in the presence of iron. Through the 1H NMR spectra was possible to observe changes in the signal intensities of the olefinic, bis-allylic and allylic protons as well as the formation of oxidation products in the biodiesel in the degradation process.
publishDate 2020
dc.date.none.fl_str_mv 2020-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000801661
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532020000801661
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.21577/0103-5053.20200052
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.31 n.8 2020
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
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reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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